Many-body Hilbert space scarring on a superconducting processor

doi:10.1038/s41567-022-01784-9

CORC > 自动化研究所 > 中国科学院自动化研究所 > 国家专用集成电路设计工程技术研究中心 > 实感计算

	Many-body Hilbert space scarring on a superconducting processor
	Zhang, Pengfei 7,8; Dong, Hang 7,8; Gao, Yu 7,8; Zhao, Liangtian 6; Hao, Jie 6; Desaules, Jean-Yves 5; Guo, Qiujiang 4,7,8; Chen, Jiachen 7,8; Deng, Jinfeng 7,8; Liu, Bobo 7,8
刊名	NATURE PHYSICS
	2022-10-13
页码	9
ISSN号	1745-2473
DOI	10.1038/s41567-022-01784-9
通讯作者	Ying, Lei(leiying@zju.edu.cn) ; Wang, H.(hhwang@zju.edu.cn) ; Lai, Ying-Cheng(Ying-Cheng.Lai@asu.edu)
英文摘要	Many-body quantum systems that escape thermalization are promising candidates for quantum information applications. A weak-ergodicity-breaking mechanism-quantum scarring-has now been observed with superconducting qubits in unconstrained models. Quantum many-body scarring (QMBS) is a recently discovered form of weak ergodicity breaking in strongly interacting quantum systems, which presents opportunities for mitigating thermalization-induced decoherence in quantum information processing applications. However, the existing experimental realizations of QMBS are based on systems with specific kinetic constrains. Here we experimentally realize a distinct kind of QMBS by approximately decoupling a part of the many-body Hilbert space in the computational basis. Utilizing a programmable superconducting processor with 30 qubits and tunable couplings, we realize Hilbert space scarring in a non-constrained model in different geometries, including a linear chain and quasi-one-dimensional comb geometry. By reconstructing the full quantum state through quantum state tomography on four-qubit subsystems, we provide strong evidence for QMBS states by measuring qubit population dynamics, quantum fidelity and entanglement entropy after a quench from initial unentangled states. Our experimental findings broaden the realm of scarring mechanisms and identify correlations in QMBS states for quantum technology applications.
资助项目	National Natural Science Foundation of China[92065204] ; National Natural Science Foundation of China[U20A2076] ; National Natural Science Foundation of China[11725419] ; National Natural Science Foundation of China[12174342] ; National Basic Research Program of China[2017YFA0304300] ; Zhejiang Province Key Research and Development Program[2020C01019] ; AFOSR[FA9550-21-1-0186] ; EPSRC[EP/R020612/1] ; EPSRC[EP/R513258/1] ; Leverhulme Trust Research Leadership[RL-2019-015] ; Fundamental Research Funds for the Central Universities
WOS关键词	QUANTUM SUPREMACY ; THERMALIZATION ; LOCALIZATION
WOS研究方向	Physics
语种	英语
出版者	NATURE PORTFOLIO
WOS记录号	WOS:000867606500004
资助机构	National Natural Science Foundation of China ; National Basic Research Program of China ; Zhejiang Province Key Research and Development Program ; AFOSR ; EPSRC ; Leverhulme Trust Research Leadership ; Fundamental Research Funds for the Central Universities
内容类型	期刊论文
源URL	[http://ir.ia.ac.cn/handle/173211/50328]
专题	国家专用集成电路设计工程技术研究中心_实感计算
通讯作者	Ying, Lei; Wang, H.; Lai, Ying-Cheng
作者单位	1.Arizona State Univ, Dept Phys, Tempe, AZ 85287 USA 2.Arizona State Univ, Sch Elect Comp & Energy Engn, Tempe, AZ 85281 USA 3.QuEra Comp, Boston, MA USA 4.Alibaba Zhejiang Univ Joint Res Inst Frontier Tec, Hangzhou, Peoples R China 5.Univ Leeds, Sch Phys & Astron, Leeds, W Yorkshire, England 6.Chinese Acad Sci, Inst Automat, Beijing, Peoples R China 7.Zhejiang Univ, Zhejiang Prov Key Lab Quantum Technol & Device, Hangzhou, Peoples R China 8.Zhejiang Univ, Interdisciplinary Ctr Quantum Informat, ZJU Hangzhou Global Sci & Technol Innovat Ctr, Dept Phys, Hangzhou, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Pengfei,Dong, Hang,Gao, Yu,et al. Many-body Hilbert space scarring on a superconducting processor[J]. NATURE PHYSICS,2022:9.
APA	Zhang, Pengfei.,Dong, Hang.,Gao, Yu.,Zhao, Liangtian.,Hao, Jie.,...&Lai, Ying-Cheng.(2022).Many-body Hilbert space scarring on a superconducting processor.NATURE PHYSICS,9.
MLA	Zhang, Pengfei,et al."Many-body Hilbert space scarring on a superconducting processor".NATURE PHYSICS (2022):9.